Fixing issue with CampaignItem which breaks update item flow due 'active' and 'is_active' field being together in JSON for campaign item update serialization

Author: vladimanaev

src/main/java/com/taboola/backstage/model/media/campaigns/items/CampaignItem.java

@@ -74,10 +74,6 @@ public String getDescription() {
         return description;
     }
 
-    public Boolean getActive() {
-        return isActive;
-    }
-
     public CampaignItemPolicyReview getPolicyReview() {
         return policyReview;
     }